Adaptive modulation and coding in a SC-FDMA system
    1.
    发明授权
    Adaptive modulation and coding in a SC-FDMA system 有权
    SC-FDMA系统中的自适应调制和编码

    公开(公告)号:US08605664B2

    公开(公告)日:2013-12-10

    申请号:US12517152

    申请日:2007-11-22

    IPC分类号: H04W4/00

    摘要: A method and a system for transmitting data by a transmitter over a channel having a predetermined channel quality estimate, comprises the steps of splitting (S2P) input data stream (S40, S60, S80) to be transmitted into a plurality of data sub-streams (S40a, S40b, S40c); processing (SYM1, SYM2, SYMj) each of the plurality of data sub-streams (S40a, S40b, S40c) into a plurality of symbol subsets (S41, S42, S43) by selecting a certain scheme of coded-modulation (BPSK, QPSK, 16-QAM); processing, separately, each of the plurality of symbol subsets (S41, S42, S43), via a plurality of separate Discrete Fourier Transforms (DFT1, DFT2, DFT3), herein after denoted as DFTs, to obtain a plurality of DFT-precoded data sub-streams (S44, S45, S46); allocating each DFT-precoded data sub-stream (S44, S45, S46) in a frequency resource block (RB1, RB2, RB3), via a sub-carrier mapping module (SCM), so that for each data sub-stream (S40a, S40b, S40c) the selected scheme of coded-modulation (BPSK, QPSK, 16-QAM) is chosen in dependence of the values of the channel quality estimate at the frequencies of its own allocated frequency resource block (RB1, RB2, RB3).

    摘要翻译: 一种用于通过具有预定信道质量估计的信道通过发射机发送数据的方法和系统包括以下步骤:将要发送的(S2P)输入数据流(S40,S60,S80)分解为多个数据子流 (S40a,S40b,S40c); 通过选择一定的编码调制方式(BPSK,QPSK),将多个数据子流(S40a,S40b,S40c)中的每一个处理(SYM1,SYM2,SYMj)分割成多个符号子集(S41,S42,S43) ,16-QAM); 分别经由多个分离离散傅里叶变换(DFT1,DFT2,DFT3)中的多个符号子集(S41,S42,S43)中的每一个表示为DFT,以获得多个DFT预编码数据 子流(S44,S45,S46); 经由子载波映射模块(SCM)将每个DFT预编码数据子流(S44,S45,S46)分配到频率资源块(RB1,RB2,RB3)中,从而对于每个数据子流 ,S40b,S40c)根据在其自己分配的频率资源块(RB1,RB2,RB3)的频率处的信道质量估计的值来选择所选择的编码调制方案(BPSK,QPSK,16-QAM) 。

    ADAPTIVE MODULATION AND CODING IN A SC-FDMA SYSTEM
    2.
    发明申请
    ADAPTIVE MODULATION AND CODING IN A SC-FDMA SYSTEM 有权
    SC-FDMA系统中的自适应调制和编码

    公开(公告)号:US20100002575A1

    公开(公告)日:2010-01-07

    申请号:US12517152

    申请日:2007-11-22

    IPC分类号: H04J11/00 H04L23/02 H04W72/04

    摘要: A method and a system for transmitting data by a transmitter over a channel having a predetermined channel quality estimate, comprises the steps of splitting (S2P) input data stream (S40, S60, S80) to be transmitted into a plurality of data sub-streams (S40a, S40b, S40c); processing (SYM1, SYM2, SYMj) each of the plurality of data sub-streams (S40a, S40b, S40c) into a plurality of symbol subsets (S41, S42, S43) by selecting a certain scheme of coded-modulation (BPSK, QPSK, 16-QAM); processing, separately, each of the plurality of symbol subsets (S41, S42, S43), via a plurality of separate Discrete Fourier Transforms (DFT1, DFT2, DFT3), herein after denoted as DFTs, to obtain a plurality of DFT-precoded data sub-streams (S44, S45, S46); allocating each DFT-precoded data sub-stream (S44, S45, S46) in a frequency resource block (RB1, RB2, RB3), via a sub-carrier mapping module (SCM), so that for each data sub-stream (S40a, S40b, S40c) the selected scheme of coded-modulation (BPSK, QPSK, 16-QAM) is chosen in dependence of the values of the channel quality estimate at the frequencies of its own allocated frequency resource block (RB1, RB2, RB3).

    摘要翻译: 一种用于通过具有预定信道质量估计的信道通过发射机发送数据的方法和系统包括以下步骤:将要发送的(S2P)输入数据流(S40,S60,S80)分解为多个数据子流 (S40a,S40b,S40c); 通过选择一定的编码调制方式(BPSK,QPSK),将多个数据子流(S40a,S40b,S40c)中的每一个处理(SYM1,SYM2,SYMj)分割成多个符号子集(S41,S42,S43) ,16-QAM); 分别经由多个分离离散傅里叶变换(DFT1,DFT2,DFT3)中的多个符号子集(S41,S42,S43)中的每一个表示为DFT,以获得多个DFT预编码数据 子流(S44,S45,S46); 经由子载波映射模块(SCM)将每个DFT预编码数据子流(S44,S45,S46)分配到频率资源块(RB1,RB2,RB3)中,从而对于每个数据子流 ,S40b,S40c)根据在其自己分配的频率资源块(RB1,RB2,RB3)的频率处的信道质量估计的值来选择所选择的编码调制方案(BPSK,QPSK,16-QAM) 。

    Method, mobile station and base station for transmitting data in mobile communication system
    6.
    发明申请
    Method, mobile station and base station for transmitting data in mobile communication system 有权
    方法,移动台和基站在移动通信系统中传输数据

    公开(公告)号:US20100189079A1

    公开(公告)日:2010-07-29

    申请号:US12311737

    申请日:2007-10-11

    IPC分类号: H04B7/216 H04L1/02

    摘要: Data in a mobile communications system is transmitted on at least one channel between at least one base station with multiple antennas and at least one user equipment. A base station applies precoding to the data based on a set of predefined codebooks. A first tracking mode with a first codebook from the set of predefined codebooks is used for the precoding, and at least a second tracking mode with at least a second codebook from the set of predefined codebooks is used for the precoding. The base station switches between the first tracking mode and the second tracking mode depending on at least one condition of the channel.

    摘要翻译: 在至少一个具有多个天线的基站和至少一个用户设备之间的至少一个信道上传送移动通信系统中的数据。 基站基于一组预定义码本对数据应用预编码。 具有来自预定义码本集合的第一码本的第一跟踪模式用于预编码,并且至少第二跟踪模式具有来自该组预定码本的至少第二码本用于预编码。 根据信道的至少一个条件,基站在第一跟踪模式和第二跟踪模式之间切换。

    Method, network device and user station for allocating resources to frequency bands of radio communication system
    7.
    发明授权
    Method, network device and user station for allocating resources to frequency bands of radio communication system 有权
    用于将资源分配给无线电通信系统的频带的方法,网络设备和用户站

    公开(公告)号:US07773635B2

    公开(公告)日:2010-08-10

    申请号:US11611739

    申请日:2006-12-15

    IPC分类号: H04J4/00

    摘要: Resources of two frequency division duplex (FDD) frequency bands at a distance from each other are allocated for transmissions by a time division duplex (TDD) transmission method. The resources in the first FDD frequency band are allocated for FDD transmissions in the uplink and for TDD transmissions predominantly in the uplink as the primary transmission direction, and in a secondary manner in the downlink as the secondary transmission direction. The resources in the second FDD frequency band are allocated for FDD transmissions in the downlink and for TDD transmissions predominantly in the downlink as the primary transmission direction and in a secondary manner in the uplink as the secondary transmission direction. No resources are allocated for time periods of an allocation of resources for one of the secondary transmission directions in the first and second frequency bands, for FDD transmissions in the counter transmission direction to this secondary transmission direction.

    摘要翻译: 通过时分双工(TDD)传输方法分配用于彼此间隔距离的两个频分双工(FDD)频带的资源用于传输。 第一FDD频带中的资源被分配用于上行链路中的FDD传输,主要用于作为主要传输方向的上行链路中的TDD传输,并且在下行链路中以二次方式分配作为辅助传输方向。 在第二FDD频带中的资源被分配用于下行链路中的FDD传输,主要用于作为主要传输方向的下行链路中的TDD传输,并且在上行链路中以二次方式分配作为辅助传输方向。 对于在第二和第二频带中的二次传输方向之一的资源分配的时间段,对于在该二次传输方向的计数传输方向上的FDD传输,没有资源分配资源。

    Radio Communication with a Repeater
    8.
    发明申请
    Radio Communication with a Repeater 审中-公开
    与中继器的无线电通信

    公开(公告)号:US20100002618A1

    公开(公告)日:2010-01-07

    申请号:US12083547

    申请日:2006-09-21

    IPC分类号: H04B7/14

    摘要: A first radio station receives a message in a first frequency band from a second radio station and passes the message to a third radio station in a second frequency band, where the width of the first frequency band differs from the width of the second frequency band. The modulation of the data in the message is maintained unchanged and the first radio station is not required to perform decoding of the message.

    摘要翻译: 第一无线电台从第二无线电台接收在第一频带中的消息,并将消息传递到第二频带中的第三无线电台,其中第一频带的宽度与第二频带的宽度不同。 消息中的数据的调制保持不变,并且第一个无线电台不需要执行消息的解码。

    Precoding in Telecommunication Network
    10.
    发明申请
    Precoding in Telecommunication Network 有权
    电信网络中的预编码

    公开(公告)号:US20110280163A1

    公开(公告)日:2011-11-17

    申请号:US13146095

    申请日:2009-01-26

    IPC分类号: H04W80/00 H04J3/00

    摘要: It is described a method for compensating interference effects within a telecommunication network including at least a first base station and a second base station, which serve in a cooperative manner a first user equipment and a second user equipment by using time division duplex. The method is applied in an operational state, in which the first base station is in a downlink mode and the second base station is in an uplink mode. The method includes (a) determining at least one of a first channel state information between the first base station and the second base station and a second channel state information between the first user equipment and the second user equipment, (b) encoding data signals based on the first and/or the second channel state information, and (c) transmitting the encoded data signals by the first base station and/or by the second base station. It is further described a telecommunication network, a program element and a computer readable medium, which are adapted to carry out or control the described method.

    摘要翻译: 描述了一种用于补偿包括至少第一基站和第二基站的电信网络内的干扰效应的方法,所述第一基站和第二基站通过使用时分双工以协作方式服务于第一用户设备和第二用户设备。 该方法应用于其中第一基站处于下行链路模式并且第二基站处于上行链路模式的操作状态。 该方法包括:(a)确定第一基站和第二基站之间的第一信道状态信息和第一用户设备与第二用户设备之间的第二信道状态信息中的至少一个,(b)基于数据信号编码 在第一和/或第二信道状态信息上,以及(c)由第一基站和/或由第二基站发送编码的数据信号。 进一步描述适于执行或控制所述方法的电信网络,程序元件和计算机可读介质。